Remove X-Frame options in nginx config (#322)
Remove X-Frame options in nginx config (#322)

`X-Frame-Options DENY;` doesn't permit sharing using iframe
Green-Star/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube,Chocobozzz/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube